By nine o’clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, appeared a rare rainbow soon.
A. of which
B. on which
C. from which
D. above which
网友回答
A. of which
B. on which
C. from which
(答案→)D. above which
解析：考查非限制性定语从句。句意“到九点钟，所有的火炬传递者都到达了珠穆朗玛峰的峰顶，在峰顶出现了一道罕见的彩虹。”根据句意可知，句意含有“在......之上”的意思，应该用above。故选D。